WaveSecure is a free app to help remotely locate a lost cellphone.

With the ubiquitous nature of cellphones in our lives today, the thought of loosing one with all the information stored in it, is frightening. What makes it even more frightening, is the fact that most people do not use a password to secure their cellphone in case it falls onto the wrong hands. Usually, they do not realize the need to do so till they are separated with their beloved device. Now, if you loose your unlocked phone, their is a way to not only lock down the phone remotely from a PC, but better yet, to locate it, erase its memory, and restore much of it once it is recovered.
All these possibilities are offered by WaveSecure, an free app for Android run phones, but also available for some non Android phones like Nokias.
According to the New York Times, "WaveSecure do offers more features on some other phones like allowing automatic backups, with the company promising to add those functions and more, to Android phones."

For more, see NewYork Times.com